For citations:

Demidov S.S., Petrova S.S. G. M. Fikhtengol’ts and the teaching of the mathematical analysis in the Russia during the first half of the XXth century. Chebyshevskii Sbornik. 2019;20(3):437-452. (In Russ.) https://doi.org/10.22405/2226-8383-2019-20-3-437-452